Re: [PATCH 2/2] sched/debug: add sched_update_nr_running tracepoint

[Alexei Starovoitov]

On Wed, Sep 4, 2019 at 6:14 AM Joel Fernandes <joel@xxxxxxxxxxxxxxxxx> wrote:
>
> True. However, for kprobes-based BPF program - it does check for kernel
> version to ensure that the BPF program is built against the right kernel
> version (in order to ensure the program is built against the right set of
> kernel headers). If it is not, then BPF refuses to load the program.

This is not true anymore. Users found few ways to workaround that check
in practice. It became useless and it was deleted some time ago.